Update docker/build-push-action action to v6

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
docker/build-push-action	action	major	v5 -> v6

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Release Notes

docker/build-push-action (docker/build-push-action)

### [`v6`](https://togithub.com/docker/build-push-action/compare/v5...v6) [Compare Source](https://togithub.com/docker/build-push-action/compare/v5...v6)

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Configuration

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[github-actions[bot]]

🦙 MegaLinter status: ❌ ERROR

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
⚠️ ACTION	actionlint	4		3	0.07s
✅ COPYPASTE	jscpd	yes		no	1.85s
⚠️ DOCKERFILE	hadolint	2		1	0.17s
✅ JSON	jsonlint	3		0	0.18s
✅ JSON	prettier	3	0	0	0.55s
✅ JSON	v8r	3		0	4.27s
⚠️ MARKDOWN	markdownlint	12	0	18	1.48s
✅ MARKDOWN	markdown-table-formatter	12	1	0	0.33s
✅ PYTHON	bandit	6		0	1.16s
✅ PYTHON	black	6	0	0	1.04s
✅ PYTHON	flake8	6		0	0.57s
✅ PYTHON	isort	6	0	0	0.32s
⚠️ PYTHON	mypy	6		5	8.66s
✅ PYTHON	pylint	6		0	3.95s
⚠️ PYTHON	pyright	6		8	9.44s
✅ PYTHON	ruff	6	0	0	0.03s
✅ REPOSITORY	checkov	yes		no	12.55s
✅ REPOSITORY	gitleaks	yes		no	3.73s
✅ REPOSITORY	git_diff	yes		no	0.06s
⚠️ REPOSITORY	grype	yes		1	14.41s
✅ REPOSITORY	secretlint	yes		no	1.04s
❌ REPOSITORY	trivy	yes		1	6.61s
✅ REPOSITORY	trivy-sbom	yes		no	3.66s
✅ REPOSITORY	trufflehog	yes		no	6.42s
✅ SPELL	cspell	47		0	5.07s
✅ SPELL	lychee	29		0	1.12s
✅ YAML	prettier	14	0	0	1.12s
✅ YAML	v8r	14		0	21.94s
✅ YAML	yamllint	14		0	0.52s

See detailed report in MegaLinter reports

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